If I'm not mistaken, you don't need the IHG step. Zymol just suggests putting the wax on after the HD. But, if you must use a polish, try Meguiars Bodyshop Pro Hand Polish. I heard it gives a better shine than IHG.:xyxthumbs
I suggest you stick with the HD Cleanse and then apply the Ital. No need for the IHG in between IMHO. Let us know how it comes out. I am pretty sure you will be happy with the results.